Featured Research

from universities, journals, and other organizations

Modified Gas Turbine Engine Cuts Fuel Costs And Lowers Emissions

Date:
May 18, 1998
Source:
University Of Florida
Summary:
University of Florida engineers are hoping to save taxpayers money by making more efficient and earth-friendly gas turbine engines for naval vessels and tanks, as well as helicopters and small power plants.

Writer: Kristen Vecellio, vecellio@ufl.edu

Source: William Lear, (352) 392-7572

GAINESVILLE, Fla. --- University of Florida engineers are hoping to save taxpayers money by making more efficient and earth-friendly gas turbine engines for naval vessels and tanks, as well as helicopters and small power plants.

William E. Lear, director of UF's Energy and Gasdynamic Systems Laboratory, said their gas turbine engine will feature a heat exchanger to reduce fuel costs and use a recirculating exhaust system to lower emission levels.

Researchers modified a gas turbine engine by adding a heat exchanger, a device similar to a car radiator, which extracts waste heat from the exhaust. Heating of the air in the exchanger means the engine needs less fuel to run, resulting in lower fuel costs.

In addition to adding the heat exchanger, a recirculating exhaust system was added to reuse exhaust air from the engine rather than releasing the contaminated air into the atmosphere. The exhaust system improves emission performance by running on about three parts recirculated exhaust to about one part fresh air.

Even with these additions, Lear said, the engine is small enough for a truck and powerful enough for a naval ship.

"As with other gas turbine engines, it is still compact," Lear said.

Lear said the main advantage is not the initial cost, but rather the lower operating costs and a compact design.

With the two additions, the engine runs more efficiently, he said. Current gas turbine engines are efficient at full power but rapidly lose efficiency as the engine speed drops and less air pressure is available to run the engine.

Lear said the new engine will run at its highest efficiency in 80 percent of its power range because the heat exchanger recovers wasted heat now released at low power levels.

Sponsors for the research project include NASA and the U.S. Army. Eventually, Lear said, the engine will be available commercially for electric power plants in a 30- to 100-kilowatt power range.

"The time scale is three to five years for implementation at a cost of several hundred million dollars for large engines," said Lear. "There is a couple years of more advanced development before [we get] the green light to use it commercially."


Story Source:

The above story is based on materials provided by University Of Florida. Note: Materials may be edited for content and length.


Cite This Page:

University Of Florida. "Modified Gas Turbine Engine Cuts Fuel Costs And Lowers Emissions." ScienceDaily. ScienceDaily, 18 May 1998. <www.sciencedaily.com/releases/1998/05/980518153536.htm>.
University Of Florida. (1998, May 18). Modified Gas Turbine Engine Cuts Fuel Costs And Lowers Emissions. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/1998/05/980518153536.htm
University Of Florida. "Modified Gas Turbine Engine Cuts Fuel Costs And Lowers Emissions." ScienceDaily. www.sciencedaily.com/releases/1998/05/980518153536.htm (accessed July 30, 2014).

Share This




More Matter & Energy News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
China's Drone King Says the Revolution Depends on Regulators

China's Drone King Says the Revolution Depends on Regulators

Reuters - Business Video Online (July 30, 2014) Comparing his current crop of drones to early personal computers, DJI founder Frank Wang says the industry is poised for a growth surge - assuming regulators in more markets clear it for takeoff. Jon Gordon reports. Video provided by Reuters
Powered by NewsLook.com
3Doodler Bring 3-D Printing to Your Hand

3Doodler Bring 3-D Printing to Your Hand

AP (July 30, 2014) 3-D printing is a cool technology, but it's not exactly a hands-on way to make things. Enter the 3Doodler: the pen that turns you into the 3-D printer. AP technology writer Peter Svensson takes a closer look. (July 30) Video provided by AP
Powered by NewsLook.com
Climate Change Could Cost Billions, According To White House

Climate Change Could Cost Billions, According To White House

Newsy (July 29, 2014) A report from the White House warns not curbing greenhouse gas emissions could cost the U.S. billions. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins